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36 lines
905 B
YAML
36 lines
905 B
YAML
action: global
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title: High DNS Requests Rate
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status: experimental
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description: High DNS requests amount from host per short period of time
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author: Daniil Yugoslavskiy, oscd.community
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date: 2019/10/24
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modified: 2020/08/27
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falsepositives:
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- Legitimate high DNS requests rate to domain name which should be added to whitelist
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level: medium
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tags:
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- attack.exfiltration
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- attack.t1048 # an old one
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- attack.t1048.003
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- attack.command_and_control
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- attack.t1071 # an old one
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- attack.t1071.004
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---
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id: b4163085-4001-46a3-a79a-55d8bbbc7a3a
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logsource:
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category: dns
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detection:
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selection:
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query: '*'
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timeframe: 1m
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condition: selection | count() by src_ip > 1000
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---
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id: 51186749-7415-46be-90e5-6914865c825a
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logsource:
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category: firewall
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detection:
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selection:
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dst_port: 53
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timeframe: 1m
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condition: selection | count() by src_ip > 1000
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